Yes, outside shower knobs on will mix cold with hot so the full-hot never reaches the open faucet. Another culprit is having the winter bypass valve at the water heater open, again allowing cold to mix with hot before it ever reaches the open faucet. Check your water heater winter bypass valve and make sure it is in the closed position.
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2012 Aspen Trail 2710BH | 470 watts of solar on the roof | 2x6V GC batteries | 1500 watt PSW inverter | Micro Air on A/C | so far strictly boondocking
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